Add 72/18 and 21/12, Solve 4 0/18 + 1 9/12 as a fraction

Add 72/18 and 21/12

1^st number: 4 0/18, 2^nd number: 1 9/12

72/18 + 21/12 is 23/4.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 18 × 2 = 36,
72/18 = 72 × 2/18 × 2 = 144/36
Likewise, for the 2nd fraction, since 12 × 3 = 36,
21/12 = 21 × 3/12 × 3 = 63/36
Add the two like fractions:
144/36 + 63/36 = 144 + 63/36 = 207/36
207/36 simplified gives 23/4
So, 72/18 + 21/12 = 23/4
In mixed form: 53/4

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